Drawing-pot for glass.



n. L. & F.11. Fn'lfNK. f DRAWING P01/'fox mss. ^PPL|cATxoN-4rLn rse. 21. |914.

Patented Apr.'29',11919.

3 SHEETSLSHET l.

' R. L. & F.1.FRlN-K.

DRAWING POT FOR GLASS.

APPLICATION FILED FEB. 27. |914.

Patented Apr. 429, 191

3 SHEETS-SHEET 2- R. L. & F,1. FRINK. 'DRAWING Po FOR GLASS. APPLICATION FILED FEB. 27. 1914- Patented Apr. 29, 1919.

3 SHEETS-SHEET 3.

FIG. 4.

, UNITED sTATEs PATENT oEEIoE.

ROBERT L. FRINK AND FRED J'. FRINK, OF LANCASTER, OHIO; SAID FRED J. FRINK ASSIGNOR TO SAID ROBERT L. FRINK.

DRAWING-POT FOR GLASS.

Specification of Letters Patent. Patented API. 29, 1919- Application led February 27, 1914. Serial N o. 821,396.

the invention being herein explained and the best mode in which we have contemplated applying that principle, so as to distinguish it from other lnven-tions.

The present invention relates` to mechanism for use in connection with the manufacture of window glass, and more particularly for use in connection with the drawing of glass sheets, or cylinders, forming a. feature of such manufacture as at present practised. In such drawing operation a quantity of the molten glass or metal as it is called, is placed in a suitable receptacle, and a bait then lowered int-o the lmetal and raised, as a result of which the glass adhering to such bait is drawn upwardly in the form of a sheet or cylinder, depending upon the shape vof the bait. The requisite metal for such drawing operation is supplied to fthe pot either through a direct connection with a tank, wherein the metal is stored in quantity, or else by dipping the metal over from said tank to the pot. In the lattercase more especially, therel is apt to be, in the cou'rse of time, owing to the cooling influence of the atmosphere an accumulation of congealed metal or glass within the pot, which it becomes necessary to remove before proceeding, by external application of heat thereto so as to enable such accumulation 'to be drawn oil'.

The present invention has among its objects the provision of an improved arrangement for thus melting'. and distributing or draining off the solidified glassthat thus accumulates, as also, more generally a drawing pot that will be convenient and accessible in operation and really adapted for use in drawing glass cylinders wherein air, or other pressure fluid, is introduced at the base.of the rising cylinder, 'or, in other words, through the bottom of the drawing pot. To the accomplishment of the foregoing and related objects said invention, then, consists of the means hereinafter fully de-` described and particularly pointed out in t ie claims.

The annexed drawings and the followingdescription set forth in detail certain mechanism embodying the'invention, such dis.

closed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings Figure 1 is a plan view of a mechanism, or apparatus, involving our present -improvements; Fig. 2 is a side elevation of the same; Fig. 3 is a sectional view thereof taken on the line 3 3, Figs. 1 and 2; andy Fig. 4 is an end elevational view thereof, as seen from the right in Figs. 1 and 2.

The base of the machine consists of a pedestal or like solid stand 1, vertically through which there extends a shaft 2 surrounded by a ball-bearing 3 adapted to rotatably support la frame 4. The general construction of said fra-me appears in Fig. 1; it preferably comprises simply two parallel beams or channels 5 lying in a substantially horizontal plane and secured together by transverse members or beams 6, that are attached in turn to a block 7 fitted onto said shaft and resting on the ball-bearings providedin conjunction with the latter.

The glass-working receptacles 8, or drawy ing pots proper, are two in number, and are borne, one at each end of the frame just described. In the construction of such receptacles we avail ourselves of the principle fully described in1 connection with the stationary pot shown in a patent of one of the present inventors, No. 941,512, dated Noof and means for manufacturing window glass; such principle being the conservation 0f the heat of the metal, instead of the application of heat from without, in order to maintain such metal at. the proper temperature during the drawing operation. In the present case the receptacle, or drawing pot, mounted as aforesaid, is built up of an exterior met-al shell 9 lined with suitable heat resistant material 10, such as lire clay or the like, within which, and spaced therefrom, is supported a vessel 11 likewise of clay or other suitable refractory material wherein the molten glass is designed to be placed. The space intervening between the lining and such inner vessel is packed with heat insulating material 12, as, for example,

vember 30, 1909, for an improved method mineral wool, asbestos or the like, which` the chilling influence of the atmosphere 'and makes even rollers possible.

The pots are mounted in the rotatable frame t by means of'trunnion's y20 attached to'opposite sides of the outer shell 9, so' that* each may be independently tilted abouty a substantially horizontal axis. Side members 5 of the frame are cut away, asat 21, to al low said trunnions to rest in bearing'blocl'is 22 adjustably secured to the members 1n: f question.

Accordingly by loosening the bolts` 23, that are provided to hold said blocks in position, such position may be varied to shift the corresponding pot in or out from the central axis of the machine.

ACentrally' extending througli4 thebottom of the receptacleincluding such outer shell 9, lininglO, and inner vessel 11, is atubular member,` or stem 13 through which air, or other fluid, is designed to` be supplied or exhausted,depending upon the character of the drawing operation.v This stem extends upwardly to substantially the level of the upper edge of the receptacle, 'while its lower end extends below the bottom a sutticientdistance to adapt it for ready engagement with a relativelystationary exterior supply pipe Y 14, ineone position of the frame about its which the drawing operation is intended to t be carried on, andrhence may bev calledthe drawing station', a suitable bait 17 beingvertically reciprocable over `such s/ation so as to be adapted to be ioivered into and raised from a pot thus positioned.

Diametrically opposite from such drawing' station is the draining station in which the other pot, of the two thus-seento be carried by the frame L1, may be heated so as to melt down any solidifiedv glass therein, To this end heating-means are-provided in theA form of a chamber 18 dis osed laterally adjacent v tothe path of trave of thedrawing pots on their support. Such chamberfis preferably constructed of brick and iS-vopen on the side directed vtoward the previously described parts ofthe machine, Vso that a pot,l when tilted in the frame isadaptedjto-register` fairly closely with'thechamber walls, which willbe seen to incline upwardly/and rearwardly (Fig. 2). Two series ofburners 19 extend through such? walls,` and into the chamber, so that when a pot is thus coperative withthe latter 4an ignited blast of gas maybe directed `intothe innenvessel 11 of -thepot and thus melt down the glass, which at, will drain over the lower edge of the latter 'in to altronhh disposed for this 4purpose'along the lower edge of the chamber.

The pots 8 are designed to be automati- Jcally tilted to assume a position in whichy they are thus adapted to register with the heating` 1neans,ras they alternately approach the draining station. XVith this in view, one

of the supporting trunnions 20 of each pot is` formed to project beyond its bearing suiii- -ciently to receivea `pinion 24; with which in turn meshes a rack carried by the outer end of a bar 26 reciprocably attached to the corresponding side member of the frame. Another rack 27 is provided on the inner tace of eachsuch bar at a point directly opposite to. thestand 1, that supports the frame,

. wherewith meshes a segmental gear v28 piv otally mounted between the transverse members 6 of thefframe. The arm 31 carrying auch segmental lgear extends inwardly so as nn'lform ineiect a bell-crank and carries a roller 29that travels in continuous engage ment with a cam groove 30v formed in the upper' face ofthe stand.l While of general circular form,this Igroove is in part eccentric,

,so that,vas a result 'it will be seen that such bell cranks and thus the segmentalgears carried by their outer arms will be alter- `nately given an oscillatory movement, 'as the frame rotates .about such stand; `this Inove-4 ment is translated into a-leciprocatory movement of the respective bars which control the positions ot' the two pots about their horizontal axes.

l The form 'of thegroove in the stand is properly designed to maintain each pot in the substantially horizontal position appear ying at the right orvFigs. .f1 and 2, when 'brought in or near thev drawing station; while' such .pot is similarly tilted into the outwardly inclined position shown at the right ot the figures j ust named, when brought in or near the draining station. The positioning of the Vpots it will thus be seen is automatically accomplished and requires no attentionon the part of the operator. The latter hence need merely control the rotative movement of lthe Lframe, and even this we propose to accomplish inA part automatically.

To rotate the frame in the fashion previously described any suitable driving mechalnism may of course be provided, but preferably an electric motor 32, which may be mounted beneath thelower or general sup.- i

porting frame/work upon which the stand' l rests, will be used. Such motor'is then connectedwith the'upright shaft 2 that extends l'through said stand by means of the bevel" gears 38 clearly shownin Fig. 2. The supply of current to this motor we propose shall be controlled in the rst instance by a circuit breaking and making device associated with the frame and preferably Vconsistingq of a commutator 34, or the like, (Fig. 3) ,mount` ed directly below the bearing 3 that supports` iso such frame. The construction of this device is such that the current will be automatically cut off from the motor when the pots are respectively positioned in operative relation to the drawing mechanism and heating means,

hown in Figs. 1 and 2. In order, however, io start the frame to rotate, independent means for closing the circuit such as a man- 'that of the mechanism carrying the same and co'perating therewith. It will be understood that the molten glass in the pres- .ent instance will be placed in the pot at or before it reaches the drawing station occupied by the drawin pot at the left in Figs. l and 2. Upon t e completion of the drawing operation, substantially withdraw ing as such operation will the glass thus supplied to said pot, the switch will be closed long enough to start the frame to rotate then such switch will' be opened, current for the further rotation of the frame being supplied bythe branch of the circuit closed through v'the commutator 34. `As the rotation progresses the pot just emptied of glass wil be tilted outwardly to assume the position which the pot atthe right in Figs.

1 and 2 is shown as occupying; while such previously tilted pot is righted as it iS brought around into position below thebait 17 at the drawing station. Upon the completion of this reversal of position of the pots, that is, upon a full half rotation of the frame, the current isautomatically cut o'f and rotation stopped. It will, of course, be understood that the air connection Will be broken just before rotation isstarted to th'us interchange the position of the pots, by depressing pipe section 15; while similarly such connection will be closed again when'the other pot has been brought around to the drawing station.

Other modes of applying the principle of our invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the'following claims or the equivalent of such stated means be employed.

We therefore particularly point ont and distinctly claim as our invention 1. The combination of a support rotatable about a substantially vertical axis; a glassworking receptacle borne by said support; heating means radially adjacent to the path of travel of said support, said means being adapted to heat the glass in said receptacle, said receptacle being tiltable about a substantially horizontal axis transversely disposed vof a radial line to the axis of said support into operative relation with said means; and means adapted 'automatically' thus to tilt said receptacle incidentally to the rotation of said support.

2. The combination of a support rotatable about a substantially vertical axis; a glassworking receptacle borne by said support and tiltable about a substantially horizontal axis Atransversely disposed of a radial line to the axis of said support; glass-drawing mechanism adapted tovcoperate with said receptacle when horizontally disposed; heating means adapted to coperate with said 1receptacle when tilted into a substantially vertical position; and means adapted toalternately position said receptacle to coperate with said drawing mechanism and with said heating means incidentally to the rotation of said support.

3. The combination of a stand; a frame rotatable thereon about a substantially vertical axis; a glass-working receptacle borne by said frame and tiltable about a substantially horizontal axis transversely disposedl of a radial line to the axis of said support;

glass-drawing mechanism, including a vertisupply connections for said receptacle,

vcally reciprocable bait and separable airadapted to coperate with the latter whenv- 'horizontally disposed; heating means adapt` with either receptacle in horizontal position and heating means adapted simultaneously to coperate with the other receptacle in a substantially vertical position.

The combination of a support rotatable about a substantially vertical axis; two

glass-working receptacles borne by said support and independently tiltable about substantially horizontal axestransversely disposed of aradial line to the axis of said support; glass-drawing mechanism adapted to copel'ate with either receptacle in horizontal position; heating means adapted simultaneously to coperate with the other receptacle in a substantially vertical position;

and means adapted to alternately position said receptacles to cooperate with said drawing means and with said heating iiieans in- Wardly andirearwardly; of a support iotacidentally to the rotation of said support.

6. flic combination of a stand; a frame rotatable thereon about a substantially lvertical axis; two glass-Working receptacles borne by said frame and independently tiltabie about substantially horizontal axes transversely disposed 'of a radial line to the axis of said support; glass-drawing mechanism, including a vertically reciprocable bait and separable air supply connections,

adapted to coperate` with said eitlierjre- I wardly, substantially as described, and a` tiltable pot adapted in one position to lie with its top opposite such chamber-side and l similarly inclined.

t3. In mechanism of 'the class described, thecombination with heating means including a heating chamber having one side open and the front ofits rear wall inclining upwardly and rearwardly; of a movably supported, tilta-ble'pot adaptedin one position to lie with its 'top opposite such chamberside and similarly inclined.

"9. In mechanism of the class described,

the combination with heating:r means including a chamber having one side open and the front of its rear wall incliningnpwardly and rearwardly, and gas burners arranged to'discharge into such chamber; of a movably supported; tiltable pot adapted in one position to liewvitli its top opposite such `chamber-side and similarly inclined.

10. lin mechanism of the class described, the/combination with heating means including a heating'chamberhaving'one side open and the front of its rear wall inclining uptable in a substantially horizontal plane;

'and a pot mounted on said support so as to be tiltable about a horizontal axis, said pot being adapted in one position of said supioaiae port'to lie with its top opposite suoli chamber-side and similarly inclined.

l 11. In mechanism of the class described7 the combination with heating inea-ns including a heatingchamber having; one side open and the front of itsrear wall inclining upwardly and rearwardly; of a support rotatable lin a substantially horizontal plane;

land a plurality of pots mounted on said support so as to be independently tiltable about horizontalV axes, each of said pots being adapted in successive positions of said support toY lie with its top opposite such chaniber-side and similarly inclined.

12. In mechanism of the class described,y the combination with heating means including a heating chamber having one side openy and the front of its rear wall inclining upwardly and rearwardly; of a support rotatable in a substantially horizontal plane; and a plurality of pots mounted on said support so as to be independentlytiltable about horizontal axes disposed'transversely of radial lines to the axis of said support, each of said pots being' adapted in successive positions of said support to lie with; its top opposite such chaiiiber-side and similarly inclined.

13.111 mechanism of the class described, the combination with heating means including a heating chamber having one side open.; ot' a support adjacent thereto rotatable in a substantially horizontal plane; and a pot mounted on said 'support so as to be tiltable about a horizontal axis disposed transversely' of; a radial line to the axis of said support, said pot being adapted in one position of said support'to lie'with its top opposite to and substantially parallel with such 'chainber-side.

14. Inmechanism of the class described,

the combination with heating means includ' ing a heating chamber having one side open; of a support adJacent thereto rota-table in a substantially horizontal plane;"and a pluv rality of pots mounted on said support so as to'be independently tiltable about horizontal axes disposed transversely of radial.

lines to the axis of saidv support; each-of said pots being adapted in successive lpositions -of said support to lie with its top opposite to and substantially parallel with such chamber-side.

Signed by us this 23d dav of Feby., 1914.

i y noiinnr L. ruimt.

y FRED J. THINK. Attested byf H. K.' lncin; l l?. R. PETERS. f 

